Special Senses Multiple Choice Questions
Presbyopia is the inability of the: a. lens to accommodate b. pupils to constrict c. cornea to refract light d. cones to depolarize
A
The ______ is a blind spot on the retina, while the _____ contains only cones and is the retinal area of greatest visual acuity. a. optic disc, fovea centralis b. fovea centralis, optic disc c. fundus, macula lutea d. macula lutea, fundus
A
What structure forms the boundary between the external ear and middle ear? a. tympanic membrane b. external acoustic meatus c. auricle d. pinna
A
Which extrinsic muscle of the eye is controlled via cranial nerve IV? a. Superior oblique b. Superior rectus c. Inferior rectus d. Inferior oblique
A
Which of the following statements is true of vision? a. The cornea helps converge light rays onto the retina. b. The lens of the eye will become more convex when focusing on far objects c. The light entering the eye is focused onto the optic disc. d. The iris helps to focus the lens.
A
Sound is transmitted from the tympanic membrane to the internal ear by the: a. cochlea b. ossicles c. vestibular membrane d. round window
B
Tears drain directly from the ___ into the nasolacrimal duct. a. lacrimal gland b. lacrimal sac c. Lacrimal punta d. lacrimal canaliculli
B
The anterior segment of the eye contains a fluid called: a. lacrimal humor b. aqueous humor c. vitreous humor
B
The pharyngotympanic tube connects the throat with which part of the ear? a. External ear b. middle ear c. internal ear d. cochlear duct
B
The photoreceptors sensitive to blue, red, and green light are: a. bipolar cells b. cone cells c. rod cells d. ganglion cells
B
This extrinsic eye muscle elevates the eye and turns it medially: a. Medial rectus b. Superior rectus c. Inferior Oblique d. Superior oblique
B
Which of the following occurs when the eye looks at near objects? a. the lens flattens c. the pupils constrict c. the eyelids diverge d. the ciliary muscles relaxes
B
The ear performs two major sensory functions. What are they?
Balance and hearing
Blood vessels of the eye are found in the middle of the: a. cornea b. retina c. choroid d. lens
C
The bony labyrinth forms the boundary wall for: a. the spiral organ of Corti b. endolymph c. perilymph d. both a and b
C
The ciliary zonule (suspensory ligament) holds this structure in front of the pupil: a. conjunctiva b. cornea c. lens d. ciliary muscles
C
The cochlear duct (scala media) contains: a. otolymph b. perilymph c. endolymph d. epilymph
C
The stapes connects with the internal ear via the: a. basilar membrane b. tympanic membrane c. oval window d. round window
C
Which extrinsic eye muscle depresses the eye and turns it medially? a. medial rectus muscle b. inferior oblique muscle c. inferior rectus muscle d. superior rectus muscle
C
Sclera: a. corresponds to the dura mater that covers the brain b. protects the eyeball c. provides shape and a sturdy anchoring site for extrinsic eye muscle d. all of the above are correct
D
The Scala tympani extends from the apex of the cochlea to the: a. Scala media b. Scala vestibuli c. basilar membrane d. round window
D
The area where the optic nerve leaves the eye is called the: a. fovea centralis b. macula lutea c. fundus d. optic disc
D
The auricle, or pinna: a. is composed of elastic cartilage b. gathers and funnels sound waves c. surrounds the opening of the external acoustic meatus d. All of the above are correct
D
The cornea: a. receives oxygen through the blood supply b. receives oxygen from the aqueous humor posterior to it c. receives oxygen from the air in front of it d. both b and c are correct
D
The fibrous layer of the eye contains the: a. retina b. Choroid coat c. lens d. cornea
D
The prial organ is found in the: a. vestibule b. semicircular canals c. utricle d. cochlea
D
The short tube running medially from the auricle to the eardrum is the: a. pharyngotympanic tube b. pinna c. mastoid antrum d. external acoustic meatus
D
Which of the following is a function of the vestibule? a. hearing b. angular acceleration of the head c. rotational acceleration of the head d. sense of static equilibrium
D
Which of the following is true of myopia? a. The myopic eye can see far objects clearly. b. the eyeball is too short c. Light rays focus behind the retina d. concave lens help correct this condition
D
Which statement is INCORRECT? a. Cones have low sensitivity b. Rods have low acuity c. Cones occur mostly in the central retina d. There are 20 cones foe every rod
D
List in order the auditory ossicles in sequence from the tympanic membrane to the oval window.
malleus, incus, stapes